The presence of lymph node echoes between the mesentery means the presence of mesenteric lymphadenitis. Mesenteric lymphadenitis includes acute mesenteric lymphadenitis in the ileocecal and colorectal regions. Viral infections are responsible for mesenteric lymphadenitis, and viral infections such as Coxsackie virus are clinically predominant. The common symptom is upper respiratory tract infection, and the common symptoms are sore throat, cough, fatigue, abdominal pain, nausea, vomiting, fever and other symptoms. Mesenteric lymphadenitis should be combined with ultrasonography of the right lower abdomen or CT of the lower abdomen. Ultrasonography will show multiple mesenteric lymph node echoes in the abdominal cavity, and in the treatment, a variety of medications can be used, such as injectable sulbactam sodium, injectable piperacillin sodium, tazobactam sodium, supportive therapy, and fluid supplementation. A single test result can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of the doctor, and actively treat the disease, so as not to delay the condition.